Table 2.
Demographics and ocular characteristics of patients and factors affecting surgical results
| Success (n = 40) |
Recurrence (n = 20) |
Overcorrection (n = 4) |
P value | |
|---|---|---|---|---|
| Age at surgery for exotropia, years | 34.9 ± 15.2 (18 to 71) | 31.3 ± 13.4 (18 to 59) | 47.0 ± 5.5 (42 to 54) | 0. 397a |
| Sex (M:F) | 20:20 | 12:8 | 3:1 | 0.464b |
| Preoperative deviation, PD | ||||
| Distance | 40.3 ± 15.8 (15 to 78) | 51.4 ± 17.6 (28 to 103) | 36.3 ± 8.5 (25 to 45) | 0.013a |
| Near | 36.6 ± 13.2 (15 to 71) | 46.5 ± 17.5 (15 to 103) | 36.3 ± 8.5 (25 to 45) | 0.012a |
| Distance–Near | 3.7 ± 6.9 (−5 to 28) | 5.8 ± 7.2 (0 to 21) | 0 | 0.222a |
| Visual acuity of the affected eye | 1.000b | |||
| 20/200–20/100 | 12 | 6 | 0 | |
| <20/200 | 28 | 14 | 4 | |
| Refractive errors, D | ||||
| Fellow eye | −2.0 ± 3.3 | −1.4 ± 3.3 | −1.3 ± 2.7 | 0.965a |
| Affected eye | −2.1 ± 4.5 | −0.8 ± 2.0 | −2.0 ± 5.2 | 0.717a |
| Causes of vision loss | 0.156b | |||
| Congenital disorder | 5 | 7 | 0 | |
| Anisometropia | 5 | 1 | 1 | |
| Other acquired disorder | 30 | 12 | 3 | |
| Surgery for disease-causing vision loss | 21 | 13 | 2 | 0.357b |
| Associated strabismus | 21 | 11 | 4 | 0.855b |
| Combined surgery for associated vertical strabismus | 15 | 6 | 3 | 0.566b |
| Adjustable suture | 29 | 13 | 4 | 0.550b |
| Postoperative adjustment | 11 | 3 | 0 | 0.172b |
| Postoperative follow-up, years | 1.9 ± 1.1 (1.0 to 5.3) | 2.4 ± 1.6 (1.0 to 6.6) | 1.2 ± 0.4 (1.0 to 1.8) | 0.147a |
P values were tested between groups of success and recurrence
Data are presented as mean ± standard deviation
D diopters, PD prism diopters
aMann–Whitney test
bPearson χ2 test